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In this paper we present an Improved Contention-Free Multi-Channel Medium Access Control protocol (ICM-MAC) for wireless Ad-hoc networks. The proposed MAC is based on split phase approach, and uses a single transceiver. Channel negotiations are done on a predefined channel that is used for both control and data transmissions. Nodes contend to get access to the contentionfree data period based on their knowledge of their neighbors’ activities and the availability of free channels. We evaluate the proposed MAC via simulation and compare with the Multi-channel MAC protocol (MMAC) and Progressive Back Off Algorithm (PBOA) algorithms.